Articles describing or mentioning Sketchpad:

	“Sketchpad: A man-machine graphical communication system” by Ivan E. Sutherland, from proceedings of AFIPS 1963 The seminal paper describing Sketchpad, a system using the first graphical user interface
	“Of mice and menus: Designing the user-friendly interface” by Tekla S. Perry and John Voelcker, from IEEE Spectrum 1989 A history of early GUIs, full of interesting tidbits
	“The father of computer graphics” by Don Bissell, from Byte 1990 A little piece on Ivan Sutherland’s unique Sketchpad